2012年，Wingårdh建筑事务所和Wikerstål建筑事务所共同接受委托，对坐落在斯德哥尔摩的国家博物馆进行全面改造设计。次年，博物馆闭馆，开始施工。此次改造设计的设计理念是——打造一个耐久的多功能博物馆，具体通过以下几点来实现：

重新利用自然光和外部的景观； 将之前用于内部活动的空间改为公共性空间； 改善交通流线。游客流线和艺术品流线互不交叉，保证艺术品 流线的独立性和安全性； 针对中间层没有气候控制系统，上层需要新的技术系统的情况，替换并增加技术系统； 带着对于建筑的历史文化价值和建筑文化价值的尊重来完成上述的改造。

Wingårdh Architects and Wikerstål Architects were jointly commissioned to plan the comprehensive renovation of Nationalmuseum in 2012, and the following year the building closed for the start of construction. The project brief was to create an enduringly functional museum by:

reclaiming opportunities for daylight and views to the exterior; reclaiming for public use several areas that had previously been used for internal activities; improving the logistics through alternative circulation patterns for the public and separate and secure routes for the art; replacing and augmenting all technical systems—the middle level had no climate control system at all and the upper level needed a new one; achieving all these enhancements with respectful consideration for the building’s architecture and cultural historical value.

▼国家博物馆外观，exterior view

国家博物馆的改造，大部分都是基于原建筑师Friedrich August Stüler的设计。我们的工作则是确保改造设计满足新技术与操作的要求，同时保留建筑的特质。最开始在设计国家博物馆时，是打算做成多功能博物馆的，但是随着时间的推移，逐渐妥协于现实，这个想法不了了之。到二十世纪末期，建筑已经严重损坏，平面布局非常随便。根据国际需求，博物馆需要为艺术品提供更安全稳定的环境和条件，因此改造博物馆成为了当务之急。

Most of Nationalmuseum’s new design is derived from the painstaking work of the building’s original architect, Friedrich August Stüler, and the lion’s share of our work has been to ensure we meet the new technical and operational requirements while remaining true to the building’s own inherent qualities. Because the Nationalmuseum building was conceived for a variety of different uses, over time it accumulated layer upon layer of compromise. By the end of the twentieth century, it was badly worn and the floor plans had become haphazardly configured. International demands to provide more secure and stable conditions for the art ultimately made the need for a thorough renovation urgent.

▼改造大部分都是基于原建筑师Friedrich August Stüler的设计，Most of Nationalmuseum’s new design is derived from the painstaking work of the building’s original architect, Friedrich August Stüler

我们面临的第一个挑战是如何解决流线问题。游客和艺术品都有各自的新的交通流线。博物馆负一层之前里面全是管道和布线，现在通过降低层高来腾出空间布置洗手间和寄存处。互不交叉的两条流线是通过加设了两个新楼梯而实现的。其中一个楼梯装饰风格极具改造特色——使用镀金黄铜，这种材质很符合博物馆温暖柔和的特质。博物馆还有电梯供游客乘坐以及艺术品的运输，最大的电梯可容纳97人。最初建筑师提出在外部增加电梯井，但是考虑到节约和流线，这个提案被否定了。之后我们选择把电梯放在南部中庭处，这是改造时发现的新空间，电梯井加在这里很合理。电梯井看起来是独立的可拆除的一部分，事实上它确实是可拆除的。电梯井被铜制编织条纹的“壳”所包裹。与博物馆厚重的墙不同，这种外壳更轻，且寿命较短，使用这种外壳的想法从博物馆建成之时就有了。电梯井下半部分可以从两侧打开，变成一个大屏幕，这样中庭就可以变成报告厅。

▼中庭的电梯井被铜制编织条纹的“壳”所包裹，the elevator shaft in the atrium is wrapped in a weave of patinaed brass

Our first challenge was to resolve the logistics. Visitors and artworks both now move along new circulation paths. The floor of the basement level, which had previously been a low-ceilinged space that was largely filled by pipes and wiring, has been lowered to make room for bathrooms and a coat check. These are reached by two new staircases, one of which is clad in the renovation’s characteristic finish: patinaed brass, a material with the ability to harmonize with the museum’s warm and soft character. Art and visitors alike can be transported in spacious elevators, the largest of which holds ninety-seven people. Our preliminary design called for adding elevator shafts to the exterior, but that solution was scrapped for reasons of conservation as well as logistics. Instead we chose to allow the elevators to occupy space inside the south atrium. The space had not been uncovered until the renovation, and was therefore a more reasonable place for the addition of an elevator shaft. It looks like a freestanding object that could be removed if desired—and in fact it could be removed. It is wrapped in a weave of patinaed brass. Treating this lighter and more temporary sheathing (in contrast to the building’s heavy, permanent walls) was an idea that emerged at just the same time Nationalmuseum was formed. The lower portion of the elevator shaft can be opened on the sides to reveal a large video screen that can transform the atrium into a lecture hall.

▼电梯井立面细部，elevator shaft detail